High pressure saturated liquid
Wet vapour
Very wet vapour
Dry vapour
A. High pressure saturated liquid
(e₁ + e₂)/ e₁ + e₂ - e₁e₂
1/e₁ + 1/e₂
e₁ + e₂
e₁e₂
Decrease in fin spacing and increase in number of rows
Increase in fin spacing and increase in number of rows
Increase in fin spacing and decrease in number of rows
Decrease in fin spacing and decrease in number of rows
Temperature, pressure and enthalpy
Specific volume and enthalpy
Temperature and enthalpy
Temperature, pressure, specific volume and enthalpy
Humidity ratio
Relative humidity
Absolute humidity
Degree of saturation
Increases with increase in velocity of air passing through it
Decreases with increase in velocity of air passing through it
Remains unchanged with increase in velocity of air passing through it
May increase or decrease with increase in velocity of air passing through it depending upon the condition of air entering
Dry bulb temperature is higher than wet bulb temperature
Dew point temperature is lower than wet bulb temperature
Dry bulb, wet bulb and dew point temperature are same
Dry bulb temperature is higher than dew point temperature
More
Less
Equally
Unpredictable
R-11
R-12
R-22
Ammonia
Ammonia vapour goes into solution
Ammonia vapour is driven out of solution
Lithium bromide mixes with ammonia
Weak solution mixes with strong solution
Actual COP/theoretical COP
Theoretical COP/actual COP
Actual COP × theoretical COP
None of these
Humidification
Dehumidification
Heating and humidification
Cooling and dehumidification
Mean radiant temperature
Effective temperature
Dew point temperature
None of these
B.P.F. - 1
1 - B. P.F.
1/ B.P.F.
1 + B.P.F.
Domestic refrigerators
Commercial refrigerators
Air conditioning
Gas liquefaction
Frosting evaporator
Non-frosting evaporator
Defrosting evaporator
None of these
Water and water
Water and lithium bromide
Ammonia and lithium bromide
Ammonia and water
Same
More
Less
More or less depending on ambient conditions
Reversed Carnot cycle
Bell Coleman cycle
Both (A) and (B)
None of these
The constant enthalpy lines are also constant wet bulb temperature lines.
The wet bulb and dry bulb temperature are equal at saturation condition.
The wet bulb temperature is a measure of enthalpy of moist air.
All of the above
R-11
R-12
R-22
Ammonia
1.25
0.8
0.5
0.25
25 kJ/kg
50 kJ/kg
100 kJ/kg
125 kJ/kg
Operating the machine at higher speeds
Operating the machine at lower speeds
Raising the higher temperature
Lowering the higher temperature
Above which liquid will remain liquid
Above which liquid becomes gas
Above which liquid becomes vapour
Above which liquid becomes solid
Remains constant
Increases
Decreases
None of these
Suction of compressor
Delivery of compressor
High pressure side close to receiver
Low pressure side near receiver
After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the compressor
Wet bulb temperature
Dry bulb temperature
Dew point temperature
None of these
Lithium bromide used in vapour absorption cycle is non volatile
Lithium bromide plant can't operate below 0°C
A separator is used in lithium bromide plant to remove the unwanted water vapour by condensing
Concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator
Condenser
Evaporator
Absorber
None of these